Screenwriter Roger Avary, most known for co-writing Pulp Fiction with Quentin Tarantino, is serving a yearlong sentence in a California jail for vehicular manslaughter, but was released during working hours five days a week on a work release program. Allegedly, he was using the popular social networking site to post details about life in prison. However, in California prisoners are forbidden to access the Internet during the period of incarceration, and Avary was caught a few months after he started tweeting. Since then, he's back in regular confinement, and the account has been changed to private.
Twitter is clearly hot right now, as more celebrities and companies jump on the social networking bandwagon.